Dahua DHI‑ARD2231‑W2 Wireless Dual‑Tech Detector uses PIR and microwave technology for accurate motion detection, pet immunity, temperature sensing, jamming detection, and stable RF communication — ideal for residential and commercial security.

Product Description

The Dahua DHI‑ARD2231‑W2 Wireless Dual‑Tech Detector delivers superior indoor motion detection by combining passive infrared (PIR) and microwave sensing technologies. Designed to reduce false alarms caused by thermal interference, this advanced detector is ideal for homes, shops, and offices. Features such as pet immunity (≤18 kg), auto temperature compensation, and jamming detection ensure high accuracy and reliability. With two‑way RF communication, AES128 encryption, and cloud update support, it integrates seamlessly into Dahua’s wireless alarm ecosystem for enhanced security and convenience.

What’s Included in the Box

• 1 × Dahua DHI‑ARD2231‑W2 Wireless Dual‑Tech Detector

• Mounting hardware

• User manual
  

Main Features

• Dual Sensing Technology: Combines PIR and microwave detection to reduce false triggers.

• Pet Immunity: Ignores motion from animals up to 18 kg and under 50 cm in height.

• Auto Temperature Compensation: Maintains detection accuracy in varying temperatures.

• Adjustable Sensitivity: 3 levels to match different environments.

• Built-In Temperature Sensor: Displays ambient temperature and supports overheating alerts.

• Cloud Firmware Updates: Remotely updatable with automatic failure recovery.

• Tamper & Jamming Detection: Detects interference or unauthorized removal.

• Secure RF Communication: AES128 encrypted, with frequency hopping and two-way signal confirmation.

Detailed Specifications

Detection & Sensing

• Sensor Type: Dual-element low-noise PIR + Microwave (24 GHz)

• Detection Mode: PIR + Microwave

• Detection Range: 12 m @ 90° (2.2 m install height)

• Detection Speed: 0.3–3 m/s

• Pet Immunity: ≤18 kg, height <50 cm

• Sensitivity: Adjustable (3 levels)

• White Light Resistance: 2000 lx

• Temperature Sensing Range: −15 °C to +65 °C

• Temperature Accuracy: ±1 °C

Wireless Communication

• Frequency Range: 433.1 MHz – 434.6 MHz

• Communication Distance: Up to 1,200 m (open space)

• Mechanism: Two-way RF

• Encryption: AES128

• Frequency Hopping: Yes

• Cloud Updates: Supported

Power & Battery

• Battery Type: 1 × CR123A

• Battery Life: ~3 years (with 10 triggers/day at 70% battery efficiency)

• Power Consumption: Max 640 mW

• Operating Current: 11 µA

• Alarm Current: 69 mA

• Low Battery Detection: Yes

Environmental & Physical

• Operating Temperature: −10 °C to +55 °C (certified: −10 °C to +40 °C)

• Humidity: 10%–90% RH

• Mounting: Wall or ceiling (with optional ARA33 bracket)

• Casing: PC + ABS

• Protection: CE, FCC certified

• Product Dimensions: 104 × 60 × 50 mm

• Net Weight: 106 g

• Gross Weight: 184 g

• Packaging Dimensions: 135 × 98.5 × 56.8 mm

Warranty Information

• Manufacturer's warranty included

• Local support available via authorized Dahua distributors in Australia and New Zealand

Brand Overview

Dahua Technology is a globally trusted leader in video surveillance and smart alarm systems. With decades of R&D expertise, Dahua delivers reliable, scalable solutions for homes, businesses, and critical infrastructure worldwide.

SKU

DHI‑ARD2231‑W2

Practical Use Scenarios

✔ Home Intrusion Detection: Monitor indoor areas while ignoring pet activity.
✔ Retail & Office Security: Dual-sensor logic reduces false alarms from HVAC or sunlight.
✔ Temperature-Sensitive Spaces: Built-in temperature monitoring for environmental awareness.
✔ Wireless Alarm Integration: Easily syncs with Dahua alarm hubs for real-time alerts and remote configuration.

Datasheets & Resources

• Product Datasheet

Excellence for the Australian and New Zealand Market

The Dahua DHI‑ARD2231‑W2 meets strict regional standards with CE and FCC certification, RCM compliance (where applicable), and suitability for ANZ environmental conditions. It is exclusively sourced via authorized Dahua channels in Australia and New Zealand, ensuring full warranty coverage and cloud update compatibility. This detector offers installers and homeowners a secure, high-precision motion detection solution backed by regional support.

FAQs

1. What is the Dahua DHI‑ARD2231‑W2 Wireless Dual-Tech Detector? (Product Code: DHI‑ARD2231‑W2)
It’s an indoor motion sensor that uses both PIR and microwave technology to detect human movement accurately, with reduced false alarms.

2. Does the DHI‑ARD2231‑W2 support pet immunity? (Product Code: DHI‑ARD2231‑W2)
Yes. It ignores pets up to 18 kg and under 50 cm in height, making it suitable for homes with small animals.

3. How far can the DHI‑ARD2231‑W2 communicate with a hub? (Product Code: DHI‑ARD2231‑W2)
It can communicate up to 1,200 m in open space via secure two-way RF communication.

4. Can the DHI‑ARD2231‑W2 detect temperature? (Product Code: DHI‑ARD2231‑W2)
Yes. It displays ambient temperature and supports alerts for overheating with ±1 °C accuracy.

5. Does the DHI‑ARD2231‑W2 support cloud updates? (Product Code: DHI‑ARD2231‑W2)
Yes. It supports cloud-based firmware updates with automatic recovery from failed updates.